Printing-machine.



P. O. M ARQUARDT.

PRINTING MACHINE,

APPLICATION FILED JULY 5,1913.

Patented Mar. 16, 1915;

B SHEETSSHEET 1.

' nv'entor:

F. C. MARQUARDT. PRINTING MACHINE.

APPLICATION FILED JULY 5,1913v Patented Mar. 16, 1915 8 SHEETS SHEET 2.

A Inventor:

F. C. MARQUARDT. PRINTING MACHINE.

APPLICATION FILED JULY 5, 1913v 1,132,481 Patented Mar. 16, 1915.

3 SHEETS -SHEET 3.

I by biw/L'QW /Z Atty.

UNITED STATES PATENT OFFICE.

FRANK G. MARQUA RDT, OF NEW YORK, N. Y., ASSIGNOB- T0 AMERICAN BA NK NOTE COMPANY, A CORPORATION OF NEW YORK.

PRINTING-MACHINE.

specification of Letter 5 Patent.

Patented Mar. 16, 1915.

Application filed July 5. 1913. Serial No. 777,395.

7 '0 all whom it may concern:

Be it known that I, FRANK C. MARQUARDT, a citizen of the United States, residing at the borough of Brooklyn, in the city of New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Printing-Machines, of which the following is a specification, reference being had therein to the accompanyin drawings, which form a part thereof.

y invention relates to printing machines, and more particularly to a type of rotary plate printing machine.

The main object of the invention is to provide a rotary plate printing machine wherein the impression cylinder or D-roll will be rotated in a manner to permit the machine to be run at high speeds.

A further object is to provide controlling means for said impression cylinder or D roll whereby it will be brought to a positive stop between impressions and held in the same position preparatory to each impression, whereby upon receiving its initial or starting impulse, it will be thrown into frictional engagement with the printing plate in such relation thereto as to bring the same portion of the blanket into engagement with the printing portion of the plate or plates with each impression.

A still further object is to provide means whereby the peripheral velocity of the impression cylinder or D-roll will be synchronized with that of the plate cylinder through compensating means adapted to permit the actuating means for the impression cylinder or D-roll to adapt itself to the velocity of said cylinder or D-roll in case of a loss of uniformity in such peripheral velocities due to a variance in the thickness of different blankets or plates, temperature conditions or other causes resulting in variances 'in the relative diameter of the impression cylinder or D-roll, arid the plate cylinder when made ready for a run of the machine;

A still further object is to provide means whereby the machine may be adjusted to time to a nicety, the initial impulse imparted to the impression cylinder or D-roll.

A still further object is to provide means adapted to mechanically anu momentarily check the rotation of the impression cylinder or D-roll after the completion of each rotation thereof.

A still further object is to provide the actuating means for the impression cylinder or D-roll with a removable, adjustable member adapted to arrest rotary movement of the said cylinder or D-roll to insure its proper positioning and permit the adjustment of, or repairs to, the machine, by the resetting or replacing of this member.

A still further object is to provide means whereby the actuating member of the impression cylinder or D-roll may be thrown into or out of the operative relation to the cooperating means carried by the plate cylinder without disturbing the proper position of said cylinder or D-roll relative to said plate cylinder.

A still further object is to provide means whereby movement of said D-roll actuating means is prevented excepting when said plate cylinder is just coming to or has just passed its printing position. And a still further object is to provide a high speed to tztry plate printing machine the design of which will be such as to insure the automatic adjustment of the various parts in a manner to secure reliability in their operation and minimize likelihood of a loss of adjustment in the various cooperating parts.

The invention consists primarily in a printing machine embodying therein a rotarv plate cylinder, a rotary impress on cylinder, or D-roll, means actuated from said plate cylinder and adapted throughout a portion of the rotation thereof to actuate said impression cylinder or D-roll, cooperating means acting upon said impression cylinder or D-roll, said means and said coopnovel features of C("iitillll filiifl and co...

nation of parts as are hereinafter set forth and described, and more particularly pointed out in the claims hereto appended.

Referring to the drawingsa-J igure 1 is a fragmentary view of the printing portion of a rotary plate printing machine embodying my invention; Fig. 2 is a side view thereof; Fig. 3 is a similar view on a. smaller scale, showing the D-roli actuating 1nechanism immediately after receiving its initial impulse; Fig. 4 is a similar view sl'iowing the relation of parts when the peripheral speed of the gear driving the D-roll exceeds that of the gear meshing therewith; Fig. 5 is a diagrammatic view of the printing and appurtenant mechanisms of a machine embodying my imention; and Fig. 6 is a detail view of the interlocking device of the main controlling mechanism.

Like numerals refer to like parts throughout the several views.

In rotary printing presses for using engraved, intaglio or under-surface plates, it is necessaiyto have the impression cylinder driven at the same peripheral speed as the plates, and to have the pressure between this cylinder and the plate or plates much greater than is required in the ordinary surface printing press in order to cause the silient surface of the cylinder to be forced within the lines of the plate to insure the taking up by the paper of a sullicient quantity of .ink to secure a good, clean impression The bianhet of the impre ion cylindcr should be drawn taut to avoid such wrinkling as would result in imperfect imprints. By reason of these conditions, the impression cylinder usually employed has a portion of its periphery cut away, the holding and tightening means engaging the ends of the blanket being located in this cutaway portion. An impression cylinder of this character is known as a D-roll.

The D-roll, excepting when an impression is being taken, remains stationary, means being provided to bring the roll into eiwagement with the plate at prcdetcn mined point to insure the engagement of the same portions of the impression surface with the same portions of the plate or plates upon each actuation thereof in order to cause the cameo oll'set which forms upon the impression surl'ace. to come into register with the corresponding intaglio lines of the plate with each impression. This offset is a mere forming of thc impression surface. no inleheing transferred to the D-roll. It is necessary to provide means for arresting the rotary movement of the. D-roll after each nnpressum in order to provent the gradual creeping of the roll. which would result in a loss of rcgis'er between the offset upon the impression surface a d the plates, as Well as to insure the proper relative position of the actuating means for the D-roll and the cooperating means upon the cylinder.

By my present invention, I proyide a construction whereby the impression cylinder is positively brought to rest after each impression, and in a definite position which will insure the proper relation of parts at all times, the means for iolding the D-roll stationary becoming imperative simultaneously with the imparting to the D-roll of the initial impulre for bringing it into en gagement with the plate. and the actuating means therefor into register with the to operating means upon the impression cylinder. In connection with this construction, I provide means whereby the D-roll is permitted to creep slightly while the impression is being made, thus permitting the D-roll to be driven to all intents and purposes by frictional engagement with the plate, and driving means for assisting this frictional drive so as to avoid any possibility of slippage, at the same time afford ing suilicien't l'lesibility in the drive to per not a slight fluctuation in the peripheral speed of the D-roll independently of said driving means. This means, as will more fully appear hereinafter, will permit a mechanical driving of the D-roll, and com- 'pensate for any such fluctuations as are above referred to by means becoming op erative at the end of each impression to check further rotation of the D-roll after the mechanical drive becomes inoperative in relation thereto.

In the accompanying drawii'igs, I have shown a positi\'el driven main shaft 1, the said shaft having mounted thereon and rotatable therewith the plate or form cylinder 2, and the main gear 3. Mounted upon the shaft 4, counter to the shaft 1, the impression cylinder or D-roll 5, the flattened portion of which indicated at (3.

In the form of the invention illustrated, the cyliiuler is adapted to carry two plates, the D-roll halting two rotations to one full rotation of said plate cylinder. One plate upon said cylinder 2 is indicated at. i'. f

The plate cylinder 9 is rotated continuously, the in'ipression cylinder or D-roll be ing driven intermittently, coming to rest after each impression and receiving a start ing impulse from the actuating mechanism for the plate cylinder in a manner to throw said impression cylinder or D-roll into the operative relation to each plate upon said plate cylinder and the coiperating actuating parts controlling said D-roll from said plate cylinder into the operative relation. To secure thi. mode of operation, I provide the shaft- 1 with means adz itod through a portion or portions of eaclriotation of said shaft to actuate the impression cylinder or b-roll 5, the shaft 4 being provided with means adapted to cooperate therewith, and exert a continuing action upon the D-roll from the impression cylinder to insure the imparting of a continued, approximately uniform peripheral velocity thereto from said plate cylinder. This means comprises a segmental or intermittent gear carried by the shaft 1, the shaft 4 for the D-roll being provided with a cooperating segmental gear adapted to mesh with the gear segments carried by said shaft 1.

To insure the timely engagement and disengagement of the plate cylinder and the [3-- roll gears, I provide a member carried by said impression cylinder gear, and a to operating member carried by said D-roll gear, for imparting an initial impulse to the latter and to insure the gears coming to mesh with each other. Intermediate the toothed sections of the plate cylinder gear, I provide means adapted to be engaged by cooperating means on the D-roll gear to arrest or check the rotary movement of said D-roll and hold it in a fixed position be tween impressions, a construction which results in a unidirectional operation of the D-roll, and causes said D-roll to come to position for a succeeding actuation immediately upon the completion of each rotation thereof.

In the accompanying drawings, the D-roll controlling means carried by the shaft 1 comprises a guide adapted to conform to a shoe carried by the D-roll, said guide preferably being made in two sections, 8 and 9, adjustably mounted upon the gear 3 and provided with inwardly presented flanges 10 and 11 adapted to form seats for the segmental rack sections 12 and 13 which are held in position by means of flanges 14 and 15 adapted to project below the rim of said gear 3. Intermediate the racks 12 and 13 are the fixed segmental guides 16, 17, 1S and 19, which are of a height corresponding with the diameter of the guides 8 and 9, the sections 16 to 19 being removable for the purpose of facilitating the substitution of parts to compensate for wear at this point. The racks 12 and 13 are identical, being of a suflicient length to impart one operative rotation to the Droll. This construction is essential locauso those guides 16 to 19 are provided for the purpose of permitting a dwell of th D-roll between impressions, and for holding said D roll agaimt rt tation in a fixed position, so that it will start undcr exactly the same conditi ns with each oporatiw rotation thereof. The shaft 1 of the D-roll has: mounted tln-rc m a segmental gear 20, that portion of which corresponding with th cutaway portirn of the 'lroll proper, 5, i removed, a segmental shoe 21 being inserted in this cut away portion so as to'act similarly to a Geneva gear in controlling the operation of said D-roll. To permit nicety in the fitting of the shoe 21, with relation to the guides 16 to 19, I provide the shank of said shoe uith slots 22,

by means of which this shoe may be ad justed radially of the gear 20 and set in its adjusted position, said gear being recessed to form a socket for said shank.

Carried by each section 8 and 9 of the guide disk is an impact stud 23 or 24, each of which studs is adapted to engage an arm 25 carried by the 20, the function of said stud and said arm being to impart an initial impulse to the D-roll, and bring so the gear 20 thereof into mesh with either rack 12 or 13 for the purpose of facilitating the further rotation of said D-roli by said racks.

As I have heretofore stated, the periph- 35 eral velocity of the D-roll is subject to flue-- tuations, which preclude a solely mechanical drive thereof; and to permit such fluctuations while insuring the D-roll coming to rest and starting from a predetermined said racks to normal after any displacement thereof, while at the same time permitting slight circumferential movement of said rack suliicient to compensate for any such fluctuations.

The manner of assembling the. slidable or floating racks, 12 and 13, between the gear 3 and the guides 8 and 9, having a continuous surface corresponding in diameter with the said rack, prevents displacement of these guides while permitting them to have free 0 movement under the control of the D-roll.

The stations 8 and f) of the guide disk are made independently adjustable in order to secure a firm support for the impact studs 23 and 24, while at the some time permitting 0 either of these studs to be adjusted slightly cirruml'i-rcntiallv of the gear 3, at any time and indol'u-ndcutly of the other, to secure accuracy and niccty in the timing of the initial impulse imparted to the D roll.

In addition to confining and guiding the 1'llCl\"- l2 and 13, the guide disk formed of tho sections 8 and 9 serves as a bearing for the shoe 21 when it is desired to throw the D-roll into a position where it will remain inoperative. n twithstumling a coir tinned rotation o i the plate cylinder 2, as in starting the device the press is frequently turned orer a l'lllllllfll of times before paper is ed ther to, and during the run of a press there are frequent stoppages during which it is desirable to make the D-roll inoperzu tire to avoid oilsetting of the ink thereon.

To permit this throwing of the D-roll into mul out ml the operative it'lIlCihll to the plate vlinder, the D-rull shaft is prov ded 2* 3th inc-ans niuuntrd an :25 to be siiml lzitui' of the nmclrinv, carrying with it. in. gear 20 and arm Acting upon :1 rollar at-rind by the Elm l't'v is an tmtiliatury lever 28 one end of uhilli i:-i nvtwl upon by u rank inn L contmlied by the tuotlu'd wheel 30 thus sem'izig sullicient ptwvcr t0 insurn is quick inteml vshifting of my Dru?! min in nppurtv- IlflItCtS. To insure n sxziiicicni .mm'enzcnt of tin: gear J l and arm 2:) {Hill il.\()i(l any '[MS- sibility of tlicir lining r-li ltml while tin: D- roll is in the operative relnti n t0 the plates upun the (rylintlur :2 I provide ii'atcrlocking means butn'evn snitl 11mins and sail plate cylinder, positiuVv presuming) t n'umzincnt V c the D-ml in (:ugngn nu-nt with 1, plntrsm and 1 m minis: time, in iriug tlir pmpnr (win wl' nun'enuant at the g rm- 110 mu uf will gr-nr H1 (in: Jig it intu or nut u! the ()[MEIMU'G relutiun. This inlrrluckmg rninpriszw: ;i imlll plate i, cnrritd by the shaft l and liming tliermn one nr mnre segmental uxt izsiuns or rip-rem 32.2, (If the same uvgrce an; tlne largest plat uliiuli may b4: muuntml on said cylinder :5, the number at 201: extension; or ri :rurmspuniling nitii ttw nuni (if pintc -illt'll may be carri ztl by sail Cylinder, in tlzs new? partying rlmwiuger I have slnmin tun such exttnsmns m llreiS.

Each such aavtcnnmn 0r riser upon the fnr- Ward mlgc thureuf {with rvlatizrn t0 the diltt'tifin 0i IUtrlElUll of 'll'lf? shaft 1) is beveled upon bull! siilr-s tht-rcnf to present a narrow, or ltniltu mlgm 33 Cojpernting with tl'u: extensicns 0r risers i .lIl Oscillil'lmly iii-var H, mitt arm of which. as $35, is :uhpml in w gage the cnllur upon the slmft. :L 12pm; Wilil i it t iruwlliiu g letter '38 arts, the u" M'Ui if :Zlitl lrw'ur ml 'urvnt said mum wing" pimnlml with a d. !l l@ laced c ntzivlv cum (3% uppm'xinmtvly rliamunti 'lflPOll. with the unlit; angular portiuns tiuirvoi'. pnrnllul uitlr flu mansions-z or risers 2% It n thus seen that 0 lion either plate l e T flllllLCIlll ill( be upon mic side or the 0 sions 0r IlSCtb 3"; mu] 1! prerelit vscil Druli, the (tmtiltt 36 will illifl 01' the extern int tlwsv riwrs will, iry nmwn'ivnt of the lever 34 untii the c lirw mas mi .i'z' ni its position iuliacrnt x D all.

In ms the i or shall not liuw lwan :su muted as to bring Lite contact 3 upon one aid? 01' the ullirr 0f Said r-xtmialun 01' th s inrlinril r iil mratznsg with tlww 1' 'l'm'nwr ill Jail: llu irwr il. intrruliy m m to ewtnlilhtli lliu i' 'ix'iifill of parts; nuure :r'ierrul to.

in mmmvtiun with ill': i nis, *1, I employ an nrdizmry M ishing mecl'nnism indicated conventionally in Fig. 6 of the drawings by the reference nunu-ruis 257 and Si. and an inking mechanism. aluru'n 1mm1ti0nul.l y in said figure :it, 39.

Any ijlesirml fm'm of fttrtilfl nueclzunkm nur l/Q mnj'iluyctl in cronn ection m'tli my invention, and as surli are well i; znwn tu i,l1(;-L ltillcd in the art, I lmve not illust 'illt l my sncli l'iSf-ECliZUilSXIX in cmuneetmn itii n inwntion.

"H10. uporntiun of the herein described printing nnicliine is sul'istantinlly :is f0ll0\\s:--lu starting the press, it is tirdinarily desirable in turn tin. plate cyiinder 2 over a number of timwa lj kjl Ui'? feeding paper to the prcr s, in r(l 1 r tn sccnrr n prnpur minditiuningg uf :Iiw wiping and ain-151m Ii'ii'iilth nimz and Hi tlzv l'fiiiilQF, lfnder such mnditions um inwr 2f is; actuated to impart movement in tin" link in shift the gnu 2U to the loft in Fig. 1, m l more the gear 2*) and its Sli 21 so tu cause the latter to engage the periphery nt' the guides 8 and 9, [liSQ guides. tug'ctlivr with the racks l2 and iii mill guiilw, l tn 1E inc-iusivm intvrnmlr ate said hu (Hilllillj mntinu usely \.Ei'ii iIlH, i: ii iii: plat", tfi'liutlw g and delivery u'ili lu prvsvntml tmsnrrl flit plum LUHl them: plain:- will {un s wln ulul Hit (cunxvlinilim 1L0 l i ,gi r upon the '3? n tlw rrnr enal m in slim: ill 15 ii :tlnliwn in mu: nil lan (Item of each extension or riser 32,

engaging with the extension or riser 3-2 will impart sullicient oscillatory movement to the lever 34- to complete the throwing of the gear 20. If, by chance, the gear 20 should stop midway of its full lateral movement, the point of the diamond wedge or contact 36 would contact with the narrow or knife edge 33 of the extension or riser and, there being no surfares to abut against each other, the lever 34 will be thrown either one way or the other to complete the lateral movement of said gear 20, thus preventing the shoe 21 from hearing partly upon the guide 16 or 17, 18 or 19, and the continuous guide ti -9.

By the operation above referred to, blocking of tlugmovement of the gear 20 by the guides 8 an L9 is prevented. In addition to the fore oing function, the interlocking means will prevent any lateral movement of the gear .20 while it is engaged with a plate by reason of the circumferential elongation this riser or extension blocking oscillatory movement of the lever 34- and a resultant oscillatory movement oi the gear 20 during a period eoextensive with the interval during which the D-roll is in contact with a plate.

The gear 20 is thrown into mesh with the rack 12 substantially simultaneously with the engagement of the blanket of the D-roll with the plate or with the plate and the sheet of paper upon which the imprint is being made. and theoretically. the rack 12 will thereafter drive said. D-roll at the same peripheral velocity as the plate itself. In practice. however, it is found that it is prac tically impossible to so nicely adjust the relative diameters of the plate cylinder and its plates. and the Droll, as to permit an exact mechanical drive which will avoid slippage between the plates and the D-roll. Toovercome this structural diiiiculty, the racks 12 and 13 are permitted to have movement against spring pressure so as to permit that slight fluctuation in the peripheral velocity of the plate cylinder and of the D roll which occurs at all times during the running of the press.

The tendency of the D-roll is to exceed the peripheral speed of the plate cylinder, and assuming that such a condition exists in the machine shown in the accompanying drawings, after the engagement of the D- roll with the plate. the D-roll will receive from the rack 12 a constant. positive rotary impulse. except when the speed of the D- roll is slightly in excess of that of the plate. Under such conditicns. the rack .20 of the D-roll will impart slight movement to the rack 12, against its springs, as shown in Fig. 4, thus compensating for this loss of synchronism in the peripheral speeds of the gear mechanism connecting the impression cylinder and the D-roll, while permitting the plates upon said plate cylinder and the D-roll itself to rotate at the same peripheral speed. If this fluctuation be but momentarily, the rack 12. will have a return movement to compensate for a slowing down of the gear 520. These fluctuations are very slight, but were nct means provided to rectify this error, the sum of such fluctuations in a long run of the machine would cause the D-roll to lose its proper relaticn to the cther ccoperating parts of the machine and prevent it from starting each rotation from exactly the same position. This would result in a loss in the register of the cameo offset upon the blanket of the D- roll and the intaglio lines of the plates, thus resulting in inferiority in the quality of the work secured from the press.

Immediately that the D-rcll passes from its frictional engagement with a plate, the rack 12, through its spring, will restore the gear 20 to the position relative to the actuating means therefor. carried by the plate cylinder, which it would have had. had there been no speed fluctuations of the D- roll. As the gear 20 passes out of mesh with the rack 12, the shoe 21 will come to a seat upon the guides 18 and 19, and the arm 25 will come to a position where it is adapted to be immediately engaged by the stud 24. The seating of the shoe 21 upon the guides 18 and 19 will momentarily check the rotary movement of the D-roll and prevent any overrunning. thereof, holding said D-roll stationary with the flattened portion thereof presented toward the plate cylinder, until the stud 24 impacts with the arm 25. whereupon tbe D-roll is thrown into mesh with the rack 13 and the operation above described repeated in relaticn to this rack, the Droll coming to rest and bein held in this position, after disengagement trom the rack 13, by the guides 16 and 17.

it will be observed from the foregoing, that the Droll during a run of the press receives intermittent unidirectional rotation with a momentary dwell between said rota tions, sufiieient to accurately position the D-roll; and that with each rotation of the said D-roll. the starting and stepping conditions are identical, thus insuring each imprint being made under identical conditions.

In using two or more plates upon the machine, the thiekness of these plates may vary slightly without interference with the operation of the press in any way. and slight variations in the thickness of the blankets, through stretching or otherwise, will not interfere with the quality of the Work produced. By reason of these conditions, the speed of the press may be materially increased, which fact. together with the reduetion in the dwell between actuations of the D-roll, will appreciably increase the ca parity of the machine.

The guides is and i), bearing upon which to rsta .li an inopera tire position of it and the plat rylindeu the shoe Bl adapted to seat ali n the p 2. 20 is shifted lateirll'" the e'ircui'ii erentiu adjustment oi the sections h. and J oi 1-; i guide being solely 23: th permitting that dish! ad en" neresary to insure. meet; in the timing of the initial impulse imparted by the studs 12;, and A, through the arm $33. to the Dani].

By using the racks 1'2 and i3. plates of difl'erent dimensions may be used upon the machine; or when a plate cylinder is designed for recciying a plurality of plates, a lesser number than the full capacity of the plate cylinder may be mounted thereon without interfering with the operation of the machine in any Way.

The removability of the stop guides 16 to 19 and the remorability and adjustability of the shoe 21 are for the purpose of permitting the substitution of parts in case of, and for compensating for, near upon these parts, these portions of the actuating mechanism being subject to the greatest \vear. l urthermore. accuracy in the adjustment of these parts is necessary to insure exactness in the positioning of the D-roll after each rotation thereof.

Various alterations in the design of the structure herein described, and various adaptations of my invention to plate printing presses of difi'erent types may be made without departing tram the spirit and scope of my invention; and l'ierelore is not my intention to limit n. elf to the precise details of constructionshown in the accom panying drawings.

Having described my invention, what I claim as new and desire to have protected by Letters Patent, is

1. A printing machine embodying therein a rotary plate cylinder a rotary impression cylinder or D-roll and means whereby said impression cylinder or D-roll is alternately rotated and held stationary comprising a segmental gear movable with said plate cylinder, a guide terminating adjacent each end thereof, a segmental gear mm able with said impression cylinder or D roll, an elongated surface adjacent the ends of said gear d adapted to cooperate with said guide. and cot'iperating means moiable with said plate cylinder and n ith said impression cylinder or D-roll respectiwly whereby an initial or starting impulse is given to said impression cylinder or D-roll to bring said gears into mesh.

A printing marhinc embodying tli rr-in a movable support for a plate. an impression cylinder or D-roll rotatable about a fixed axis, means carried by said support for imparting a starting impulse to said impresion c viindm' or D-roll and throwing it into i li ieal en; ,i'enu'nt with the plate pn said ;-np oit. roi'i erating members lIXlCd by said upport and said iinpres xn cylinder or DIJli. re gz-ei-tircl one of said members being apable of nmycincut by the other to permit fluctuation in the peripheral speed of said impression cylinder or Duoll, a guide adjacent the end of the member carried by said support and a cooperating member carried by said impression cylinder or D-roll adapted to o iicratiyely engage said guide whereby rotation of said impression cylinder or D-roll is checked after each rotation thereof and is held in a fixed position until the succeeding actuation of said means for imparting starting impulse thereto.

it printing machine embodying therein a movable support for a plate, a rotary impression cylinder or D-roll, means carried by said support for imparting a starting impul'te to said impression cylinder or D-roll and nurturing: it into frictional engagement \\ith the plate on said support, a rack movahly supported by said support, a guide adjacent to the end of said rack, a segmental rack carried by said impression cylinder or Droll adapted to mesh with said first named rock, a he eby said D-roll is adapted to move at a peripheral speed at variance with the speed of" said rack carried by said support, and a shoe carried by said segmental gear :ulapted through engagement with said guide to arrest rotary movement oi. said impression cylinder or D-roll and position it pltii ill'tiluiy to a succeeding: rotation thereof.

4. A prittin machine embodying therein a movable support for a plate, a rotary impre'sion cylinder or D-roli, means carried by said support for imparting a starting impulse to said impression cylinder or D-roll and throwing it into frictional engagement with the plate on said. support. cooperating members carried by said support and said impression cylinder or D-roll, respectively, one of said members being capable of movenunt by the other to permit fluctuation in the peripheral speed of said impression cylinder or D-roll. means adjacent the end of the naanla r carried by said support where by rotation of said impression cylinder or D-roll is cherlced after each rotation thereof, and controlling means whereby said first named means and said cooperating members may be made inoperative to prevent the actuation of said impression cylinder or D- roll.

5, A printin; machine embodying therein a movable support for a plate, a rotary impression cylinder or Droll, means carried by sid support for imparting a. starting impulse to said impression cylinder or D l', ii

roll and throwing it into frictional engagement with the plate on said support, cooperating members carried by said support and said impression cylinder or Droll, re spectivcly, one of said members being capable of movement by the other to permit fluctuation in the peripheral speed of said impression cylinder or D-roll, means adjacent the end of the member carried by said support whereby rotation of said impression cylinder or D-roll is checked after each rotation thereof, controlling means whereby said first named means and said cooperating members may be made inop erative to prevent the actuation of said impression cylinder or D-roll, and means preventing the actuation of said last named means while said impression cylinder or D-roll is in frictional engagement with a plate on said support.

6. A printing machine embodying there in a movable support for a plate, a rotary impression cylinder or D-roll, means carried by said support for imparting a starting impulse to said impression cylinder or D- roll and throwing it into frictional engage ment' with the plate on said support, cooperating members carried by said support and said impression cylinder or D-roll, re spectively, one of said members being capable of movement by the other to permit fluctuation in the peripheral speed of said impression cylinder or D-roll, means adjacent the end of the member carried by said support whereby rotation of said impression cylinder or D-roll is checked after each rotation thereof, controlling means whereby said first named means and said cooperating members may be made inoperative to prevent the actuation of said impression cylinder or D-roll, and means preventing the actuation of said last named means while said impression cylinder or D-roll is in frictional engagement with a plate on said support. including therein cooperating members adapted to mechanically complete the actuation of said controlling means to prevent said means being set in a neutral position.

7. A printing machine embodying therein a continuously driven, rotary plate cylinder, a rotary impression cylinder or D-roll, means carried by said plate cylinder and adapted to impart a starting impulse to said impression cylinder or D-roll, and cooperating members carried by said plate cylinder and said impression cylinder or D-roll, con sisting of segmental racks and alternate elongated bearing surfaces whereby an intermittent, unidirectional rotary movement is imparted to said impression cylinder or D-roll, and said impression cylinder or D-roll is brought to rest after each rotation thereof.

8. A printing machine embodying therein a continuously driven, rotary plate cylinder, a rotary impression cylinder or D-rcii, means carried by said plate cylinder and adapted to impart a starting impulse to said impression cylinder or D-roll, cooperating members carried by said plate cylinder and said impression cylinder or D-roll, consisting of segmental racks and alternate elongated bearing surfaces whereby an intermittent unidirectional rotary movement is imparted to said impression cylinder or D-roll, and said impression cylinder or D-roll is brought to rest after each rotation thereof, and means whereby one of said members may be moved by the other to permit fluctuations in the peripheral speed of said impression cylinder or D-roll.

9. A printing machine embodying therein a continuously driven, rotary plate cylinder, a rotary impression cylinder or D-roll, means carried by said plate cylinder and adapted to impart a starting impulse to said impression cylinder or D'roll, cooperating members carried by said plate cylinder and said impression cylinder or D-roll, whereby an intermittent, unidirectional rotary movement is imparted to said impression cylinder or D-roll, and said impression cylinder or D-roll is brought to rest after each rotation thereof, controlling means whereby said means for imparting the starting impulse to said impression cylinder or D-roll and said cooperating members may be made inoperative and means holding said D-roll against rotation while said cooperating members are in operation.

10. A printing machine embodying therein a continuously driven, rotary plate cylinder, a rotary impression cylinder or D-roll, means carried by said plate cylinder and adapted to impart a starting impulse to said impression cylinder or D-roll, cooperating members carried by said plate cylinder and said impression cylinder or D-roll, whereby an intermittent, unidirectional rotary move- ,ment is imparted to said impression cylinder or D-roll, and said impression cylinder or D-roll is brought to rest after each rotation thereof, controlling means whereby said means for imparting the starting impulse to said impression cylinder or D-roll and said coiiperating members may be made inoperative. and meiz'ms' whereby the actuation of said last named "radius is prevented while said impression cylinder or D-roll is in frictional engagementwvith .a plate upon said plate cylinder.

11. A printingmachine-embodying therein a continuously driven, rotary plate cylinder, a rotary impression cylinder or D-roll, means carried by said plate cylinder and adapted to impart a starting impulse to said impression cylinder or D-roll, cotiperatin members carried by said plate cylinder an said impression cylinder or D-roll, whereby an intermittent, unidirectional rotary movement is imparted to said impression cylinder or D-roll, and said impression cylinder or D-roll is brought to rest after each rotation thereof, controlling means whereby said means for imparting the starting impulse to said impression cylinder or D-roll and said cooperating members may be made inoperative, and means whereby the actuation of said last named means is prevented while said impression cylinder or D-roll is in frictional engagement with a plate upon said plate cylinder, embodying therein means operative when said cooperating members are in a neutral position, for positively shitting said cooperating members into the operative or inoperative relation.

12. A printing machine embodying therein a rotary plate cylinder a rotary impression cylinder or D-roll, a segmental gear carried thereby and movable therewith, actuating uneans for said plate cylinder, a segmental rack slidably mounted with relation to said actuating means and adapted to mesh with said segmental gear, means acting to normally maintain said rack in a definite position, a fixed segmental guide carried by said actuating means adjacent the end of said rack, means carried by said segmental gear adapted to cooperate with said guide, whereby rotation of said impression cylin der or D-roll is arrested and a slight dwell is afforded after each actuation thereof, and cooperating means carried by said actuating means and said segmental gear whereby a starting impulse is imparted to said impression cylinder or D-roll.

13. A printing machine embodying therein a rotary plate cylinder, a rotary impressioncylinder or Droll, a segmental gear carried thereby and movable therewith, actuating means for said plate cylinder, a segmental rack slidably mounted with relation to said actuating means and adapted to mesh with said-segmental gear, a restoring spring acting on said rack, a fixed segmental guide carried by said actuating means adjacent the end of saili rack, means carried by said segmental gear adapted to cooperate with said guide, whereby rotation of said impression cylinder or D-roll is arrested and a, slight dwell is afforded after each actuation thereof, cooperating means carried by said actuat'zig means and said segmental gear whereby a starting impulse is imparted to said impression cylinder or D-roll, and means whereby said means for imparting a starting impulse may be shifted into a relative inoperative position.

14. A printing machine embodying there in a rotary plate cylinder, a rotary impression cylinder or D-roll, a segmental gear carried thereby and movable therewith, ac-

tuating means for said plate cylinder, a segmental rack slidably mounted with relation to said actuating means and adapted to mesh with said segmental gear, means acting to normally maintain said rack in a definite position, a fixed segmental guide carried by said actuating means adjacent the end of said rack, a circular guide carried by said actuating means at one side of said rack, means carried by said segmental gear a aptcd to cooperate with said segmental guide or said circular guide, whereby rotation of said impression cylinder or D-roll is arrested and a slight dwell is afforded after each actuation thereof, or rotation of said D-roll may be prevented, eoi perating means carried by said actuating means and said segmental gear whereby a starting impulse may be imparted to said impression cylinder or Droll, and means whereby said segmental gear may be shifted to make said starting means inoperative and prevent the meshing of said gear with said rack.

15. A printing machine embodying therein a rotary plate cylinder, a rotary impression cylinder or Droll, a segmental gear carried thereby and movable therewith, actuating means for said plate cylinder. a segmental rack slidably mounted with relation to said ctuating means and adapted to mesh with said segmental gear, means acting to normally maintain said rack in a definite position, a fixed segmental guide carried by said actuating means adjacent the end of said rack, removable means connecting said guide with said actuating means whereby said guide may be replaced in case of wear, means carried by said segmental gear adapted to coi perate with said guide, whereb rotation of said impression cylinder or D-roll is arrested and a slight dwell is afforded after each actuation thereof, and cofiperating means carried by said actuating means and said segmental gear whereby a starting impulse is imparted to said impression cylinder or D-roll.

16. A printing machine embodying therein a rotary plate cylinder, a rotary impression cylinder or D-roll, a segmental gear carried thereby and movable therewith, actuating means for said plate cylinder, a segmental rack slidably mounted with rcla-.

tion to said actuating means and adapted to mesh with said segmental gear, means acting to normally maintain said raclc in a definite position, a fixed segmental guide carried by said actuating means adjacent the end of said rack, a shoe carried by, and adjustably mounted with relation to. said segmental gear, and adapted to coiiperate with said guide, whereby rotation of said impression cylinder or D-roll is arrested and a slight dwell is ail orded after each actuation thereof, and cooperating means carried by said actuating means and said segmental gear whereby a starting impulse is imparted to said iiupressitm cylinder or D-roll.

17. i\ printing n'iarhine embodying there in a rotary plate cylinder. a rotary impression cylinder or D-roll, a segn'iental gear carried thereby and movable therewith, actuating means for said plate cylinder, a seg mental rack slidably mounted with relation to said actuatii'ig means and adapted to mesh with said segmental gear, means actin to normally maintain said rack in a definite position, a fixed segmentai guide carried by said actuating means adjacent the end of said rack, a shoe carried by, and adjustably mounted with relation to, said segmental gear, and adapted to cooperate with said guidmwhereby rotation of said impression cylinder or D-roll is arrested and a slight dwell is aliorded after each actuation thereof, removable means securing said shoe in relation with said gear, whereby it may be replaced in case of wear, and cooperating means carried by said actuating means and said segmental gear whereby a starting impulse is imparted to said'impression cylinder or D-roll.

18. A printing machine embodying there in a rotary plate cylinder, a rotary im' pression cylinder or D-roll, a segmental gear carried thereby and movable therewith, actuating means for said plate cylinder, a plurality of segmental racks, slidably mounted with relation to said actuating means, and adapted respectively to mesh with said segmental gear, means acting upon said racks respectively to normally maintain each in a definite position. a plurality of fixed segmental guides carried by said actuating means intermediate said racks, means carried by said segmental gear adapted to cooperate with said guides successively, whereby rotation of said impression cylinder or D-roll is arrested and a slight dwell is atl'orded after each actuation thereof, a projecting arm carried by said segmental gear, and a plurality oi contact studs carried by said actuating means whereby a plurality of starting impulses are imparted to said impression cylinder or D-roll with each full rotation of said actuating means.

19. A printing machine embodying therein a rotary plate. cylinder. a rotary impression cylinder or D-roll, a segmental gear carried thereby and movable therewith, actuating means for said plate cylinder. a plurality of segmental racks, slidably mounted with relation to said actuating means, and adapted respectively to mesh with said segmental gear, means acting upon said racks respectively to normally maintain each in a definite position, a plurality of fixed segmental guides carried by said actuating means intermediate said racks, means carried by said segmental gear adapted to cooperate with said guides successively, whereby rotation of said impression cylinder or D-roll is arrested and a slight dwell is atibrded after each actuation thereof, a projecting arm carried by said segmental gear, a plurality of contact studs carried by said actuating means whereby a pluralit of starting impulses are imparted to sai impression cylinder or D-roll with each fuil rotation of said actuating means, a continuous guide carried by said actuating means at one side of said racks and said segmental guides, and means for laterally shifting said segmental gear and its arm, whereby said arm is thrown out of the operative range of said studs and said means carried. by said segmental gear are thrown into engagement with said continuous guide.

20. A printing machine embodying therein a rotary plate cylinder, a rotary impression cylinder or D-roll, cooperating means carried by said plate cylinder and said i111 pression cylinder or D-roll whereby intermittent, rotary movement is imparted to the latter, means whereby said impression cylimler or D roll may be shifted laterally to make said actuating means inoperative and prevent rotation of said impression cylinder or D--roll, and interlocking means whereby movement of said D-roll is prevented while in engagement with a plate, comprising a rotary cam having an extension or riser thereon, and an oscillatory lever, one arm of which is adapted to en gage and be actuated from said impression cylimer or D-roll, and the other arm of which is provided with a contact adapted to be projected upon either side of said extension or riser.

21. A printing machine embodying therein a rotary? plate cylinder, a rotary impression cylint'zar or D-roll, cooperating means carried by 'said plate cylinder and said impre sion cylinder or D- roll whereby intermittent, rotary movement is im 'iarted to the latter, means whereby said impression cylinder or D-roll may be shifted laterally to make said actuating means inoperative and prevent the rotation of said impression cylinder 0r D-roll, and interlocking means whereby movement of said D'roll is pre vented while. in engagement with a plate. comprising a rotary cam having an exteir sion or riser thereon. and an oscillatory lever. one arm of which is adapted to engage and be actuated from said impression cylinrjler or D-roll, and the other arm of which is provided with a contact adapted to be projected upon" either side oi said extension or riser, the forward edge of said extension or riser being brought to a point and said contact bemg graduated toward it edges wl'lcrvby in case of said actuating means hmng m a neutral posltmn. said *XUIhIUU or llSQl' \Yll] posmvely and me hunk-AH) thvruoi;

In witness whereof,

complete the have

mm cment hereunto nfiixed my signature in the presence of two subscribing \itnvsscs, thirl Nth day of June, 1013.

FRANK C. MA RQITARDT. \\'itnesses:

(.Luum: FmYrK, liumxx: \VENING. 

